Daily Tech News Show Apple Patches A Signal Leak - DTNS 5254
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Apr 23, 2026 
Bodie Grimm, automotive and EV reporter, explains the latest in ultra-fast EV charging tech and why it matters. He breaks down CATL’s rapid LFP charging, thermal management and cold-weather performance. Brief takes also cover charger rollout, practical top-up times, and where to follow more EV coverage.
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Apple Fixed Signal Notification Cache Leak
- Apple patched a notification caching bug that could retain Signal message previews after dismissal or app deletion.
- 404 Media reported the FBI extracted cached Signal notifications lasting up to 30 days, prompting Signal's Meredith Whitaker to ask Apple to fix it and Apple to backport the patch to iOS 18.
Change Signal Notifications Until You Update
- If you're concerned about message previews persisting, change Signal notifications to name only or no name until you update iOS.
- The issue affected preview text in notifications and persisted even after deleting the Signal app, so updating iOS is the practical fix.
Treat Notifications As Lower Trust Surfaces
- Notification surfaces are OS-level features and can leak sensitive content if cached, so developers and users must treat notifications as lower-trust surfaces.
- Huyen Tue Dao and Tom Merritt noted platform behavior drives what developers can control and users should avoid sensitive notification previews.